I open up 1password but when I open firefox I have to sign into 1password in the browser in order to use it. I open 1password in windows but still have to open it again in firefox to use the extension.
It sounds like you installed 1Password X in Firefox. This extension requires a 1Password account and works entirely in your browser (independently from 1Password 4).
Please try to install our companion extension instead and check how it works for you.
Moreover, please note that 1Password 4 for Windows is outdated. I would recommend you to start using 1Password account and 1Password 7. If you need our help with it, we are here for you. Thanks!